I have a testing environment for the modbus. I have the Beckhoff CX5140 with EL4004. Then I have netbiter IOX-8AIV connect to EL4004. Then from my laptop, I use type C to Serial modbus RTU RS485 to connect to netbiter. when I run the Modscan 64 bit, it return Checksum Error in response Message.
Here is the setting
I try use another modscan software to scan and it return me some result but I not sure what the meaning of the return result. in Beckhoff, I has force the 6v value to the netbiter but seem like nothing change on the return result. In netbiter, I use input 1 & 2.
I'm totally new in this field and no any training before hands on for this job.
Please help me, thank you very much.